{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40557",
    "entityType": "User",
    "nonce": "0x43f34e06c0a3884ffec920774d507fe153ff9a6200b6d3e277cd02dedafbc820",
    "signature": "0x277ad5dabe8b4e9965a2277c9f98c62c3ccf4732ed54bf3677f9e4e52ffa4d39680a583b82b1b78617e3f4685707fa66412689b2cb5c68c630311fd281b82d861c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}